Obviously, a personal preference. But, I believe one's definition of light and heavy release weights also has a great deal to do with it. I did a lot of BR shooting with 1-2 oz triggers, and that's light. IMO, triggers in that extremely light weight range are not manageable as a two-stage trigger. There is simple not enough resistance at the first stage stop to prevent pulling through it and prematurely releasing the shot, at least not on a consistent basis. So, for me, at the very lightest release weights, it is definitely going to be single stage. But, from some minimum weight, depending on one's sensitivity to the trigger, it then becomes a personal choice. Where a two-stage trigger really shows its value, is when a relatively heavy release weight is either desired, or required by a minimum weight rule, as in the 4.5 lb service rifle minimum. If sufficiently adjustable, the trigger can be set up to absorb most of that heavy weight in the first stage, with much less additional pressure required to release the shot. It tricks the brain into thinking the trigger is much lighter. A real two-stage trigger (of which there are few in the sporting air rifle world) can also be set up much safer. The second stage sear is not at its release point until the first stage stop is reached, so you can safely have a very fine second stage sear engagement. An example of such a trigger is the Weihrauch HW100. When observing the trigger movement, you can see the second stage sear advance to its final position as the first stage is moved to its stopping point. Some of the fake two stage triggers, such as the Taipan Veteran, can be made to feel similar, but the sear is always at its final position when the rifle is cocked, so it cannot offer the safety of a real two-stage trigger. Which is why I never use the safety in such rifles, always decock when moving.